| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6385925 | Fisheries Research | 2014 | 10 Pages |
Abstract
Changes in species distribution and abundance during the twenty-year study period are difficult to relate to environmental dynamics. However, an inversion of the upwelling trend was observed in 2001, matching a change in the seasonality of sardinella catches, although the causality between the two phenomena could not be established. The increase in the abundance index of sardinella in the last five years, particularly during most of the core fishing season (July-September) might be due to favourable oceanographic conditions (higher upwelling index) and/or changes in the fishing strategies or efficiency. Before annual indices of abundance can be used in the future, it will be necessary to better understand possible changes in catchability during the warm/spawning season.
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Authors
Cheikh-Baye Braham, Pierre Fréon, Alain Laurec, Hervé Demarcq, Nicolas Bez,